Cooling fan



FIG. 1 is a perspective view of the cooling fan.

FIG. 2 is a front view of the cooling fan.

FIG. 3 is a left side view of the cooling fan.

FIG. 4 is a back view of the cooling fan.

FIG. 5 is a right side view of the cooling fan.

FIG. 6 is a top view of the cooling fan; and,

FIG. 7 is a bottom view of the cooling fan. 

The ornamental design for the cooling fan, as shown and described. 